Herbs, perennial, rhizomatous. Culms trigonous, 50–100 cm × 2.5–3 mm, glabrous. Leaves V-shaped, 20–50 cm × 4–7 mm. Inflorescences: spikes loosely ovoid, 1.5–7 cm wide; rays 5–13, 1–21 cm; 2d order rays 0.5–3 cm; bracts 3–8, V-shaped, 5–50 cm × 2.5–5.6 mm; rachilla persistent, wings 0.4–0.6 mm wide. Spikelets 5–30, compressed, linear, (5–)12–40 × 1.5–2.2 mm; floral scales deciduous, 6–24, reddish brown to yellowish brown laterally, greenish medially, 5–7-ribbed, elliptic, 3–4 × 1.4–1.6 mm, apex obtuse. Flowers: anthers 1.5–2 mm; styles 2–2.3 mm; stigmas 2–3 mm. Achenes dark brown, sessile, oblong, 1.5 × 0.4–0.5 mm, apex apiculate, surfaces puncticulate.
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A cespitose, non-tuberous sw. sp. with the bracts mostly surpassing the infl, has been collected just to the s. of our range in w. Mo., and may prove to occur in our range as well.
A sedge. These grow in clumps and have grass like leaves and solid stalks.
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